426 South Main Street
Pittsburgh PA, 15220
Phone No.: (412) 921-3226
Fax No.: (412) 921-9660

INSTALLATION DESCRIPTION BRIEF

INDUSTRY: IPP (Independent Power Producer)

APPLICATION: 50 MW Combined Cycle Cogeneration Plant

COMMERCIAL OPERATION: June 1989

SITHE ENERGIES USA, INC.

NAVSTA - Naval Station at 32nd Street

San Diego, California, USA

EPC CONTRACTOR: EBASCO SERVICES INC.

DESCRIPTION:

50 MW Natural Gas/Oil Fired, Combined Cycle Cogeneration Plant consisting of a single gas turbine generator exhausting into a dual pressure Heat Recovery Steam Generator (HRSG), supplying steam to a single condensing steam turbine generator.

Plant consists of the following systems that are controlled via the Distributed Control System.
  • Gas turbine generator (GE Frame 6) – Limited Control
  • Steam turbine generator
  • Heat Recovery System Generator (Vogt)
  • Duct Burner
  • Interface to existing conventional package boiler including combustion control
  • Emissions control via SCR ammonia injection (Hitachi)
  • Export Steam System @ 200 KPPH, 250 PSIG
  • Alarm and data acquisition from package systems
  • Electrical System Monitoring with integral SOE

All Balance of Plant System – Condensate, Feedwater, Fuels, Mechanical Auxiliaries, etc

CONTROL EQUIPMENT:

Leeds+Northrup MAX 1 DCS with the following components:
  • (2) Operator Stations
  • (1) Operator Station Second Screen
  • (4) Auto Backup Controller File Pairs
  • (1) Distributed Processing Unit (DPU) for SOE
  • 918 Total I/O Supplied: 230 AI 56 AO 368 DI 128 DO 60 TC 20 RTD 8 PI 48 SOE

SPECIAL FEATURES:
  • GE Speedtronics Mark 4 Datalink
  • Woodward Governor Interface
  • IBM PC Interface for Remote Monitoring, Plant Performance Calculations and Reports